Porche Airbag Systems

Airbag Ignition Sequence (Driver's Side) 16 Airbag Ignition Sequence (Passenger's Side) 18 Airbag System in the 911 Carrera 2 4, 911 Turbo 24 Airbag System in the 928 S4 GT 30 Testing Specifications 39 Safety Regulations Removal and Installation of the Airbag System 41 Body Straightening and Welding 42

Ignition Equipment

Connecting Ignition Device Driver's side Connect direct with 2-pole plug of contact unit (beneath steering column) Connect with ignition cable to both gas generators (above glove compartment) On the passenger's side, check that both airbag units have ignited (can be identified by melting of both ignition cable plugs). Route ignition cable through door gap in front of car. Connect ignition cable to a car battery. Operate switch Wrench 9259 to loosen fastening nuts of control unit and front...

Diagnosis

The airbag system is constantly monitored by a diagnosis unit in the control unit. If a fault occurs this is indicated by a monitor lamp in the instrument cluster. The airbag monitor lamp comes on for approx. 5 seconds when the ignition is switched on, then goes out again. During starting, the monitor lamp lights up once more for approx. 5 seconds. Should the monitor lamp not come or should it remain lit, there is a fault in the airbag system. The fault can be read with system tester 9288. The...

Monitor Lamp Selfchecking

When the ignition is switched on a monitor lamp in the instrument cluster lights up and goes out after approx. 5 seconds. This indicates that self-monitoring of the airbag system has taken place. Should the monitor lamp fail to light up or stays lit, there is a fault in the airbag system. If a fault occurs during driving this is indicated by simultaneous lighting up of the AIRBAG lettering or the airbag symbol, and by the central warning lamp (depending on the model). A diagnosis unit in the...

Carrera 24 911 Turbo Airbag Unit

The driver's side airbag is located in the steering wheel and the passenger's is behind a divided cover on the dashboard trim, above the knee protector strip. When the system is activated the cover folds open to release the airbag. Microencapsulated screws which have been loosened must be replaced. The airbag unit in the steering wheel is bolted on by self-locking screws (Torx). These screws must always be replaced when any repair or maintenance work is performed on the airbag unit. Tightening...

Glove Compartment

The lid of the glove compartment is integrated into the knee protector. It is opened by means of a lockable rotary knob. The glove compartment light is located at the upper edge, in the center of the compartment. In the area of the lower anchorage point, the seat belt has been stitched into a loop (tear seam), concealed by a plastic cover. The tear seam must not be damaged, since it serves as an overload indicator, showing that a seat belt has been overloaded and that it needs to be replaced....

Airbag Control Unit Control Unit Allocation

Part no. 944 618 217 01 (can be diagnosed using system tester 9288) 944 S2 Cabriolet Part no. 944 618 217 00 (can only be diagnosed via monitor lamp) 944 S2 Coup Refer to service information Airbag 944, 944 S, 944 Turbo WKD 493 621 for information on this system. In the course of Model Year '91 the control unit which can be diagnosed using system tester 9288 will also be installed in coup models. The following description applies to the control unit with part no. 944 618 217 01. The airbag...

Airbag Control Unit

The airbag control unit (1) is fastened by 4 shear-off nuts beneath the glove compartment. To release these nuts Special Tool 9259 must be used. The position is predetermined by the mounting points. The airbag system is supplied with power via a 6-pole plug connection in the area of the control unit. The plug connection is attached to the body via a securing bracket, not shown in the picture. The 6-pole plug connector can only be disconnected if the securing bracket is destroyed. To make...

Airbag Ignition Sequence Drivers Side

Airbag Sequence

Car has already decelerated strongly. Activation has taken place. Gas starts inflating the airbag. Driver is still sitting upright. Airbag is fully inflated. Driver moves forward. Part of impact energy is absorbed by the protective effect of the seat belt. The airbag system affords maximum protection only if the seat belt is properly fastened. Due to the rapid deflation of the airbag, the danger of it obstructing the driver's view is negligible. Similarly, the noise of ignition is lost in the...

And Service Information

ATTENTION Service Manager Service Technician This bulletin supersedes Technical Bulletin Group 6, Number 9001, dated January 26, 1990. Air bag supplementary restraint systems are standard equipment on all Porsche models beginning with model year 1990. The air bag, in conjunction with the three point seat belts and integrated headrests, provides optimum safety for front seat occupants. Air bag supplementary restraint systems have been available on some 944 models since 1987. In the event of an...

Airbag Ignition Sequence Passengers Side

Airbag Sequence

Car has already decelerated strongly. Activation has taken place. Gas begins to inflate airbag. Passenger is still sitting upright. Airbag unfolds. Passenger still sitting upright. Airbag is fully inflated. Passenger moves forward. Part of the impact energy is absorbed by the protective action of the seat belt. Head and upper body of passenger sink into airbag. Force causes gas to escape through outlets. Airbag deflates. Passenger moves back into seat. The airbag system affords maximum...

Airbag Unit

The airbag unit on the driver's side is built into the steering wheel. When the airbag is activated, the trim splits at a predetermined point and folds open. The airbag unit consists of the steering wheel padded boss with an integrated airbag, and a gas generator with retaining bracket. Passenger's side airbag unit The airbag unit consists of an airbag with a rubber cover, the gas generator and a retaining frame with corresponding mounting brackets. Passengers airbag unit, rear side Due to the...